Communication!

The crow can caw, nothing but the caw, The myna may sing, monotonous echoes, The braying of donkeys deafen the ears, The chattering of monkeys useless as ever, The beautiful dolphins try to speak and squeak, Even the mermaids must have sung her heart out, For the merman's copies to procreate, Fauna makes noise for want of something, All species never mimic, except the human beings, Voices show where the noises come out from, Voices are out for help, love, mate, hate and communicate, Modulation makes the difference as the facial expressions, The words do the both when written and spoken, The words really do the best how one slave and master them. The words are the loyal companions, never let us down.